Farming methods can reduce nitrous oxide emissions without slowing down the overall recovery of the ozone layer, results from new research has shown.
Environment
8 hours ago
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19
A research team led by Prof. Chen Changlun from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences, together with collaborators, developed advanced cobalt-doped nickel hydroxide bipolar electrodes ...
Analytical Chemistry
Jul 8, 2024
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82
A combined team of chemical and biomolecular engineers from the University of Delaware, and the Center for Plastics Innovation, both in the U.S., has developed a way to chemically separate fibers in textiles, allowing them ...
When power plants burn fossil fuels at high temperatures, nitrogen and oxygen molecules break apart and then recombine to form a class of compounds called nitrogen oxides, or NOx. These gases are major pollutants and contribute ...
Analytical Chemistry
Jul 1, 2024
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59
Biodegradable electronics allow for medical devices—such as drug delivery systems, pacemakers or neural implants—to safely degrade into materials that are absorbed by the body after they are no longer needed. But if the ...
Materials Science
Jun 28, 2024
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33
Researchers have identified the possible mechanisms by which long-lived mutants of the model system Caenorhabditis elegans are able to maintain learning and memory later in life while some experience cognitive decline.
Molecular & Computational biology
Jun 25, 2024
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47
Terahertz technology could help us meet the ever-increasing demand for faster data transfer rates. However, the down-conversion of a terahertz signal to arbitrary lower frequencies is difficult.
Optics & Photonics
Jun 24, 2024
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27
Caltech researchers have discovered a new class of enzymes that enable a myriad of bacteria to "breathe" nitrate when in low-oxygen conditions. While this is an evolutionary advantage for bacterial survival, the process produces ...
Earth Sciences
Jun 21, 2024
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200
Particulate matter and ozone are a major problem for people and the environment. Dr. Eva Pfannerstill, young investigator group leader at Jülich's Institute of Energy and Climate Research (IEK 8), is investigating where ...
Environment
Jun 21, 2024
0
71
A research team consisting of NIMS, AGC Inc., and JASRI has observed partial crystallization of a glass—an initial stage in its transformation into a stronger, more heat resistant glass-ceramic. The study is published in ...
Analytical Chemistry
Jun 19, 2024
0
1
Redox (shorthand for reduction-oxidation reaction) describes all chemical reactions in which atoms have their oxidation number (oxidation state) changed. This can be either a simple redox process such as the oxidation of carbon to yield carbon dioxide or the reduction of carbon by hydrogen to yield methane (CH4), or it can be a complex process such as the oxidation of sugar in the human body through a series of very complex electron transfer processes.
The term redox comes from the two concepts of reduction and oxidation. It can be explained in simple terms:
Though sufficient for many purposes, these descriptions are not precisely correct. Oxidation and reduction properly refer to a change in oxidation number — the actual transfer of electrons may never occur. Thus, oxidation is better defined as an increase in oxidation number, and reduction as a decrease in oxidation number. In practice, the transfer of electrons will always cause a change in oxidation number, but there are many reactions that are classed as "redox" even though no electron transfer occurs (such as those involving covalent bonds).
Non-redox reactions, which do not involve changes in formal charge, are known as metathesis reactions.
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